Schur, Edwin M., author
Random House, 1968
Buku Teks
edited by Mark Bardell, James Palmer and Stephen Wilkinson
LexisNexis Butterworths , 2015
Buku Teks
Bruce, Martha, author
Bloomsbury Proffesional, 2012
Buku Teks
Donnell, John D., author
Richard D. Irwin, 1983
Buku Teks
Barnes, A. James, author
Irwin , 1991
Buku Teks